Round pigtoe (Pleurobema sintoxia) COSEWIC status report: chapter 4

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List of Figures

• Figure 1a: Line drawing of the external features of the shell of Pleurobema sintoxia
• Figure 1b: Photograph of live specimens collected from the Sydenham River near Dawn Mills, Ontario in 1999
• Figure 2: Pleurobema sintoxia with Fusconaia flava for comparison
• Figure 3: North American distribution of Pleurobema sintoxia
• Figure 4: Historical (1885-1995) distribution of Pleurobema sintoxia in Ontario
• Figure 5: Current (1997-2002) distribution of Pleurobema sintoxia in Ontario
• Figure 6: Size frequency distribution for live specimens of Pleurobema sintoxia found in Lake St. Clair, the Sydenham River, and the Grand River between 1997 and 2002
• Figure 7: State and provincial conservation priority ranks (S-ranks) for Pleurobema sintoxia

List of Tables

• Table 1: Frequency of occurrence and relative abundance of Pleurobema sintoxia in various locations in the United States and Ontario